Fix response code description due to HTTP/1.1 spec
Fix response code description due to HTTP/1.1 spec

http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html

wolftune/yesodweb.com-content,maxigit/yesodweb.com-content,mlitchard/lambdaweb.com-content,wolftune/yesodweb.com-content,maxigit/yesodweb.com-content